He was powerful enough to take control of the mogu empire, he was even powerful enough to take down a titan keeper on his own (how he did it is unknown).
After that, he had the power of thunder and lightning, able to rule all of Pandaria for a time.

"Facts", brought to you by Jaylock.

Originally Posted by Jaylock

Its not a matter of opinion when FACTS back up the fact that this is one of the best expansions they have ever created.

To me he is just a power hungry fag. Fits the shaman indeed, some sort of mad elemental shaman.

Come on man, no need for that kind of language.

Lei-Shen is probably as powerful or more powerful than some of the Titan Watchers since he ripped out Ra-Den's heart when he fought him at the engine of Nak'Shala. He then went on to harvest Ra-Den's blood (Anima,) for god knows how long and imprisoned him, so he must be immensely powerful.

Before he even got most of his power, he subjugated Raden, and defeated the head of all the mogu clans. Then with the powers, he dueled and defeated Xuen the white tiger celestial. Then he dies of old age... yeah, the only time he died to someone else was when trolls came along (coincidence? I think not).

Sure he doesn't have the well built back story of most villains, but he's no laughing matter.